RT Journal Article
SR Electronic
A1 Wang, Haibo
A1 Wang, Dongpo
A1 Cheng, Fangjie
A1 Deng, Caiyan
A1 Wu, Yunlong
T1 Study on Q245 Steel fatigue crack growth behaviors at high temperature
JF Manufacturing Technology Journal
YR 2014
VO 14
IS 4
SP 637
OP 643
DO 10.21062/ujep/x.2014/a/1213-2489/MT/14/4/637
UL https://journalmt.com/artkey/mft-201404-0023.php
AB Q245 steel was once widely used in the pressure vessel industry.At present, the high temperature fatigue performance of Q245 steel was tested and analyzed. According to the relevant standards, the pre-crack specimens were tested at 25℃and400℃respectively. The a-N curves, the da / dN  K curves and the Paris formula of Q245 steelat both room temperature(25℃) and high temperature(400℃) were obtained. Finally,the high temperature fatigue fracture analysis was done.The fatigue crack growth occurredalong the grain at high temperature. A large number of acicular oxideappearin the fracture surface and the fatigue striations could notbe observed at high temperature.